package 牛客周赛.牛客周赛Round88;

import java.io.InputStream;
import java.util.Scanner;

/**
 * @Title: A
 * @Author 贾金博
 * @Package 牛客周赛.牛客周赛Round88
 * @Date 2025/4/7 上午10:43
 * @description: A题
 */
public class A {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        if(c >= a * b ) {
            System.out.println("YES");
        } else {
            System.out.println("NO");
        }
    }
}
